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@article{MS2_1958__6_165695, author = {R.L. Goodstein}, title = {Models of {Propositional} {Calculi} in {Recursive} {Arithmetic.}}, journal = {Mathematica Scandinavica}, pages = {293--296}, publisher = {mathdoc}, volume = {6}, year = {1958}, zbl = {0088.01001}, url = {http://geodesic.mathdoc.fr/item/MS2_1958__6_165695/} }
R.L. Goodstein. Models of Propositional Calculi in Recursive Arithmetic.. Mathematica Scandinavica, Tome 6 (1958), pp. 293-296. http://geodesic.mathdoc.fr/item/MS2_1958__6_165695/